The expected value of the difference of two sample means equals the difference o

Question

The expected value of the difference of two sample means equals the difference of the corresponding population means when: a. the populations are approximately normal and the sample sizes are large. b. the samples are independent. c. the populations are normally distributed. d. All of these choices are true. The expected value of the difference of two sample means equals the difference of the corresponding population means when: a. the populations are approximately normal and the sample sizes are large. b. the samples are independent. c. the populations are normally distributed. d. All of these choices are true. The expected value of the difference of two sample means equals the difference of the corresponding population means when: a. the populations are approximately normal and the sample sizes are large. b. the samples are independent. c. the populations are normally distributed. d. All of these choices are true.

Explanation / Answer

D. All of these choices are true

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